Marketing yourself as an IT "jack-of-all-trade

ultimatemonty writes: As an IT professional looking for a new job, I'm trying to figure out how to market myself as a "jack-of-all-trades" IT worker. I'm currently employed at a medium sized university as a video conferencing specialist. I'm good (competent) at many IT related tasks (Linux server management, programming, Windows/Linux desktop support, video conferencing support, etc...), but specialize or excel in none of them, sort of like the lone IT manager in a small shop. What kinds of jobs would the Slashdot community look for with this kind of work experience, and how would you market yourself (design your resume, cover letter, etc) to prospective employers so they get the full-breadth of your capabilities without over-stating your abilities?